Resilient tire.



HAB/BY IB. MONTGOMERY, 0F HARRISBUG, PENNSYLVANIA.

RESILIENT TIRE.

To all whom it mag/consent Be it known that I, HARRY B. MONTGOM- ERY, a citizen ofthe United States, residing atHarrisburg, in the county of Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in Resilient Tires, of which the following is a specification. Y

As is Well known in the-operation of motor vehicles, and the like, tire expense has become a most serious consideration because v of the high cost of rubber and the comparatively short life of tires made of such substance.

The majority of tires most commonly employed nonT are of the inflatable type and are soreadily punctured, aside Afrom `the damage incidental to Wear and tear in use, that a practical substitute for such tires is a desiderat-um of obvious importance in this art.

The intent of the present invention has beento devise a tire constructionof a composite nature, and of the type including inflatable andsolid members, the klatter to constitute the Etread and take up the Wear,

as Well as to prevent punctures, and the former to afford the desired resiliency necessa-ry inan article of this kind.

In carrying out the invention, it is contemplated to .provide a peculiar arrangement and construction of inflatable and solid tire members, as above premised, and. to associatetherewithnn insulating memberinterposed between the inflatable and solid parts. The insulating member is det signed toeffectively protect the inflatable part of the tire against blow-outs, by preventing heat, due to friction, orcontact of the tread `with the surface over which it travels, from passing to the inflatable member so as to expand the air in the latter and cause undue pressure therein. The insulating member, however, performs additional functions, the 'most important of which is to act as a locker, or anti-slipping meanstending to prevent creeping of one part of the tire upon the other. which would cause Wear and friction with disadvantageous results.

lt is a further object of this invention to so design the inflatable andssolid members of the tire as to afford. a peculiar interlock tages,

therebetween, preventing relative circumferential movement, with resultlng advanspecication of Leners Patent.

Application led J une 29,

1911. 'serial No. 636,043.

and tothe accompanying drawings, in

Which- Figure l is a partial side elevation and section of a Wheel,` showing the invention applied thereto; Fig. 2 is a cross section Figs?) is a modification more fully present.- ing the interlocking means between the parts of the tire.

Throughout the following detail description and .on the several gures'of the drawings, similarl parts are referredto by like reference characters. i

Describing the invention more specifically, l in the drawings denotes a AWheelvof conventional form such as at present in use, commonly on automobiles, 2 designates the '.sulliciently stout to withstand considerable pressure upon inflation of the same. Said nated at 5, for attaching the same to the clenclier rim :'2. The tread 4 is annular in shape and is formed upon its inner side with an annular protuberance G adapted to fit into an annular groove 7 of the inflatable member 3 .when the latter is .inflated and ready for use. protuberance G is than the maximum diameter of the grooved portion T of the member 3 whereby, when the member 3 is inflated, the tread 4 will be prevented from displacement by the'cooperation of' the part 6 with the part il. The member 3 constitutes an air cushion and is preferably narrower, transversely.. than `the tread l, so that the projecting sides of the tread protect the cushion or inlatabhI portion of the tire, the latter being designed essentiallyY to Aperform the function of a vcushion aloncvand by the tread Al'.

Intel-posed between-the cushion 3 and the tread. 4 is the insulating strip S, the latter being preferably made of sheet asbestos material or (apli-valent substance, and Sullicienlly-"licary lo eliminate likelihood of heat 'being` transmitted .from the tread 4 to the in.

that will be more fully,appreciated I upon reference to the following description, l astronsnature.

llated cushion il, such heat being responsible in the ordinary lires for' blow-outs of a d1snot to lsustain ivear such asu'ill be received Patented Api-.9, 1912.

through the rim and tire of this invention;

rim of the Wheel, which is preferably of the member 3 Will have suitable means, desig- The inside diameter of the ll will he apparent that in u addition to the function performed bythe stri'pS actingas insulation between thelt'read 4 and cushion 3,

ing with the parts 3 and 4 to prevent relative circumferential movementI of the saine: Necessarily, the strip -8 aii'ordsafrlction member which, when the parts of the tire are in use, tends to prevent likelihoodof circumferential slipping of the tread 4 withv re.

spect to the cushion 3. `As a further means f to prevent the relative movement -of the after the latter is iniiated.

parts 3` and 4, the'protuberance. 6 Vmay be provided at intervals upon its inner circumterence with transverseA projections or ribs 9 vwhich embed themselves in'v the cushion 3 Necessarily,

Isince the projections or ribs Q ifo-rm indentasides of the, tire to render what unsightly.

tions in 4the cushion 3; and. corresponding indentations in the' to shift laterally from its normal position between said parts;

'- ,The ,members appreciated In width, the insulation'B is .somewhat jnarrower'than the Width ofthe contacting portions -of the members '3 and l4, so. that the insulation does not project from the the latter' somescribed may be modified in so far as the.

" substances used for making `the `various parts is concerned,` as well'as" the exact forlmation and arrangement of said parts, such modiicationbeing in accord with the spirit of the invention and scope of the appended claim. 1 4

In assembling the parts of the tire, the deflated cushion 3'is slipped over the rim 2 and clenched in the customary Way, after which the insulating strip 8 is placed in position, either around the inside of the tread said strip constitutes a' roughened anti-slipping member Acoperatstrip 8, thelatter is in ,this manner interlocled with the parts 3 and 4 against any tendency -9 provide interlocking. means of an effective form, as will be'readilyY Preferably the ends of the inflated. The operation of removing the member 8 for renewal or other'purposes, or disassemblingj the parts of the tire, may be quickly and readily performed.

The'inflatable member Sis so formed in the actual manufacture of the same that said` member, when inated, will" have a greater pressure at spaced points on opposite sides of the tread 4 than at the base of the groove vin said member 3. In other groove, maybe reinforced, as shown zit-3 and thus rendered less elastic than at the points at opposite sides of said groove.' The advantage of. this structure necessarily is to concentratethe pressure of the inflatable member 3 at spaced points near opposite sides-.of the tread 4, thereby rendering less the likelihood of lateral displacement of the tread from the cushion or member 3. t

as vone in which the treadmember 3 is so foimed as to provide spaced 'annular pres sure elements bearing against the tread 4 with great pressure at spaced points on oppositefsides of the latter and with little or nopressure, at the point of smallest'diameter of the tread.

Having thus described the invention, what is claimed as new is:

In la resilient tire, the .combination of a hollow Vinflated cushion of annular form, a

rim on which said cushion isanounted, the outer central circumferent-ial portion of the cushion` being providedwith a reinforcement rendering the same substantially nonelastic whereby when the cushion vis inflated, an annular grooveis formed in said outer side, and a tread surrounding the cushion and having a portion thereotI mounted in said groove so that the hollow portions of the4 cushion at opposite sides of the rein- 'forcen'ient above mentioned bear against the tread from opposite sides.

in presence of two'witnesses.

HARRY B. MONTGOMERY.

lVitnesses:

JAMES S. MoN'rGoMnnr, 'HERBERT D. HARRY.

`4,01" -around the cushion 3,'and the latterA lwords, the member 3, at the baseof the' InA testimony whereof ljatlix my signature The above construction might be described Copiesof this patent may be obtainedior ve cents each, by addressing the Commissioner of Patents, Washington, 11,6. 

